Document
LTC2604/LTC2614/LTC2624
Quad 16-Bit Rail-to-Rail DACs in 16-Lead SSOP
FEATURES
n Smallest Pin Compatible Quad 16-Bit DAC: LTC2604: 16-Bits LTC2614: 14-Bits LTC2624: 12-Bits
n Guaranteed 16-Bit Monotonic Over Temperature n Separate Reference Inputs for each DAC n Wide 2.5V to 5.5V Supply Range n Low Power Operation: 250μA per DAC at 3V n Individual DAC Power-Down to 1μA, Max n Ultralow Crosstalk Between DACs (<5μV) n High Rail-to-Rail Output Drive (±15mA) n Double Buffered Digital Inputs n LTC2604-1/LTC2614-1/LTC2624-1: Power-On Reset
to Midscale n 16-Lead Narrow SSOP Package
APPLICATIONS
n Mobile Communications n Process Control and Industrial Automation n Instrumentation n Automatic Test Equipment
DESCRIPTION
The LTC®2604/LTC2614/LTC2624 are quad 16-,14- and 12-bit 2.5V to 5.5V rail-to-rail voltage output DACs in 16-lead narrow SSOP packages. These parts have separate reference inputs for each DAC. They have built-in high performance output buffers and are guaranteed monotonic.
These parts establish advanced performance standards for output drive, crosstalk and load regulation in singlesupply, voltage output multiples.
The parts use a simple SPI/MICROWIRE compatible 3-wire serial interface which can be operated at clock rates up to 50MHz. Daisy-chain capability and a hardware CLR function are included.
The LTC2604/LTC2614/LTC2624 incorporate a power-on reset circuit. During power-up, the voltage outputs rise less than 10mV above zero scale; and after power-up, they stay at zero scale until a valid write and update take place. The power-on reset circuit resets the LTC2604-1/LTC2614-1 /LTC2624-1 to midscale. The voltage outputs stay at midscale until a valid write and update take place.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
BLOCK DIAGRAM
GND 1
REF LO 2
REF A 3
VOUTA 4
DAC A
INPUT REGISTER
INPUT REGISTER
DAC REGISTER
INPUT REGISTER
INPUT REGISTER
DAC REGISTER
VOUTB 5
REF B 6
CS/LD 7
SCK 8
DAC B
CONTROL LOGIC
DECODE
32-BIT SHIFT REGISTER
DAC REGISTER
DAC REGISTER
DAC D
VCC 16 REF D 15
VOUT D 14
DAC C
VOUT C 13
REF C 12
CLR 11
SDO 10
SDI 9
2604 BD
ERROR (LSB)
Differential Nonlinearity (LTC2604)
1.0 VCC = 5V
0.8 VREF = 4.096V 0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0 0
16384
32768 CODE
49152 65535
2604 TA01
2604fd
1
LTC2604/LTC2614/LTC2624
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Any Pin to GND ............................................ –0.3V to 6V Any Pin to VCC ............................................. –6V to 0.3V Maximum Junction Temperature .......................... 125°C Operating Temperature Range
LTC2604C/LTC2614C/LTC2624C ............. 0°C to 70°C LTC2604C-1/LTC2614C-1/ LTC2624C-1 ............................................. 0°C to 70°C LTC2604I/LTC2614I/LTC2624I.............–40°C to 85°C LTC2604I-1/LTC2614I-1/ LTC2624I-1 ..........................................–40°C to 85°C Storage Temperature Range .................. –65°C to 150°C Lead Temperature (Soldering, 10 sec)................... 300°C
PIN CONFIGURATION
GND 1
REF LO 2
REF A 3
VOUT A VOUT B REF B
4 5 6
CS/LD 7
SCK 8
TOP VIEW
16 VCC 15 REF D 14 VOUT D 13 VOUT C 12 REF C 11 CLR 10 SDO 9 SDI
GN PACKAGE 16-LEAD PLASTIC SSOP
TJMAX = 125°C, θJA = 150°C/W
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC2604CGN#PBF
LTC2604CGN#TRPBF 2604
16-Lead Narrow SSOP Package
LTC2604CGN-1#PBF
LTC2604CGN-1#TRPBF 26041
16-Lead Narrow SSOP Package
LTC2604IGN#PBF
LTC2604IGN#TRPBF
2604I
16-Lead Narrow SSOP Package
LTC2604IGN-1#PBF
LTC2604IGN-1#TRPBF 2604I1
16-Lead Narrow SSOP Package
LTC2614CGN#PBF
LTC2614CGN#TRPBF 2614
16-Lead Narrow SSOP Package
LTC2614CGN-1#PBF
LTC2614CGN-1#TRPBF 26141
16-Lead Narrow SSOP Package
LTC2614IGN#PBF
LTC2614IGN#TRPBF
2614I
16-Lead Narrow SSOP Package
LTC2614IGN-1#PBF
LTC2614IGN-1#TRPBF 2614I1
16-Lead Narrow SSOP Package
LTC2624CGN#PBF
LTC2624CGN#TRPBF 2624
16-Lead Narrow SSOP Package
LTC2624CGN-1#PBF
LTC2624CGN-1#TRPBF 26241
16-Lead Narrow SSOP Package
LTC2624IGN#PBF
LTC2624IGN#TRPBF
2624I
16-Lead Narrow SSOP Package
LTC2624IGN-1#PBF
LTC2624IGN-1#TRPBF 2624I1
16-Lead Narrow SSOP Package
Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
TEMPERATURE RANGE 0°C to 70°C 0°C to 70°C –40°C to 85°C –40°C to 85°C 0°C to 70°C 0°C to 70°C –40°C to 85°C –40°C to 85°C 0°C to 70°C 0°C to 70°C –40°C to 85°C –40°C to 85°C
ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating
temperature range, otherwise specific.